User Manual
Professional Powered Speakers
Finally, Setting Up for the Gig Just Got a
Whole Lot Easier!
One of the coolest things about
active loudspeakers is the lack of all the
backbreaking racks of amps, crossovers and
EQs that are often required to make passive
systems sound almost as good. But that
comes with a trade-o —that extra weight
is transferred to the loudspeaker, making
it di cult for a single user to heave all that
mass onto a speaker stand.
By utilizing switch-mode power
supplies and Class-D ampli er topology,
the new EUROLIVE B312D and B315D
loudspeakers provide 28% more
output power (550-Watts) and still
weigh 10% less than our best-selling
B312A/B315A systems.
Sound quality is also improved,
thanks to an integrated sound processor,
which provides total system control,
dependable protection of the transducers
(woofer and tweeter) and virtually
eliminates distortion—even at extreme
operating levels. In addition, both models
feature an Ultra-Low Noise (ULN) MIC/LINE
input with LEVEL control and a dedicated
2-band EQ (HIGH/LOW) for simple,
yet e ective tonal control.
What is Class-D Technology?
Instead of operating relatively
continuously like Class AB circuits,
Class-D amps switch on and o
thousands of times per second, delivering
power only when needed. In other words,
the ampli er is either fully on or fully o ,
which signi cantly reduces power losses
from the output devices given o as heat.
Less heat means our amps don’t need
massive heat sinks, and that means we can
make them lighter. Our no-compromise
design means your EUROLIVE D Series
loudspeakers will deliver full power with
incredible delity all night long, without
the need for lengthy rest cycles.
EUROLIVE D Series — 550-Watt
2-Way PA Speaker Systems
with 15"/12" Woofer and 1.75"
Titanium Compression Driver
High-power 550-Watt 2-way PA sound
reinforcement speaker system for live
and playback applications
Ultra-compact light weight system
delivers excellent sound even at
extreme sound pressure levels
Revolutionary Class-D ampli er
technology: enormous power,
incredible sonic performance and
super-light weight
Internal switch-mode power supply
for noise-free audio, superior
transient response and very low
power consumption
Integrated sound processor for
ultimate system control and
speaker protection
Extremely powerful long-excursion
LF driver (B315D: 15" / B312D: 12")
provides incredibly deep bass and
acoustic power
State-of-the-art 1.75"
titanium-diaphragm
compression driver for exceptional
high-frequency reproduction
Ultra-wide dispersion, large-format
exponential horn
Ultra-low noise Mic/Line input with
Volume control and Clip LED
Dedicated 2-band EQ for perfect
sound adjustment
Additional Line output allows linking
of additional speaker systems
Continued on next page
EUROLIVE
B315D/B312D




